Self-proportioning fluid feeding apparatus



Feb. 23, 1954 B SELF-PROPORTIONING FLUID FEEDING APPARATUS 2 Sheets-Sheet 1 Filed Aug. 1, 1949 INVENTOR.

BY/LL Afforney Feb. 23, 1954 L 2,670,002

SELF-PROPORTIONING FLUID FEEDING APPARATUS Filed Aug. 1, 1949 2 Sheets-Sheet 2 1N VEN TOR.

paw-M95264 Afzornga Patented Feb. 23, 1954 UNITED STATES PATENT OFFICE SELF-PROPORTIONING FLUID FEEDING APPARATUS 23 Claims. 1

This invention is concerned with fluid feeding apparatus and it is a general object of the invention to provide a dependable accurate apparatus for feeding or supplying a fluid at a predetermined pressure employing, as the control or regulating medium, another or diflerent fluid, that is, a fluid of a different specific gravity.

There are situations where it is desirable that a fluid be fed at a predetermined pressure or in a predetermined manner, as for instance, where a fluid is fed into a stream to act upon or to treat it. An example of such a situation is where one fluid, such as gasoline or a petroleum derivative, is flowing in a stream through a pipe, while acid is introduced into the stream.

The apparatus of the present invention involves, generally, a closed vessel having an elongate vertically disposed body, preferably cylindrical, and having ends that close the body at its ends. A partition is provided in the body intermediate the ends dividing the body into two chambers, one a storage chamber and the other a transfer chamber. In the preferred form the partition is closer to one end of thebody than the other, so that the transfer chamber is considerably smaller than the storage chamber. Filling connections are provided for introducing liquids into the body and in the preferred arrangement there is a filling connection in the end of the body closing the storage chamber and there is a filling connection in the side of the body at the end of the storage chamber immediately adjacent the partition. An outlet duct is provided in the end of the body that closes the transfer chamber and an inlet duct is provided in the side of the body communicating with the transfer immediately adjacent the partition. A bleed duct extends through the partition and has one end open in the transfer chamber at a point spaced from the partition and has the other end open in the storage chamber at a point close to the end of the vessel closing the storage chamber. A make-up duct extends from the partition into the transfer chamber and receives fluid from the storage chamber and discharges it into the transfer chamber at a point beyond the end of the bleed duct in the transfer chamber and in the vicinity of the outlet duct.

The structure operates to handle two fluids of different specific gravities and which are such as to-separate rather than commingle, and it may be utilized either to feed the heavier fluid by means of or under the influence of the lighter fluid, or to feed the lighter fluid by means of or under the influence of the heavierfluid.

To convert the apparatus from one action or operation to the other it is bodily turned end for end. When a heavy fluid is to be fed or controlled by a light fluid, as for instance when an acid is to be controlled by a gasoline, the vessel is arranged with the transfer chamber down or at the lower end of the structure, and it may be coupled with a flow line equipped with a pressure regulator so that a connection extends from the high pressure or upstream side of the line to the inlet duct or connection then occurring at the upper end of the transfer chamber while a connection extends from the outlet duct to the low pressure or downstream side of the line. With the structure thus arranged and when charged with fluids so that the vessel is full, gasoline admitted from the high pressure or upstream side of the gasoline line displaces acid from the transfer chamber of the vessel so that it flows into the low pressure side of the gasoline line and the action of the apparatus is not interfered with or influenced by variation of supply of acid in the vessel.

When a light fluid such as oil is to be fed'by a heavy fluid, such as water, the apparatus is arranged with the transfer chamber at its upper end and it may be coupled to a water carrying line equipped with a pressure regulator or flow controlling device by a connection from the high pressure or upstream side of the water line to the inlet which occurs immediately below the partition, while a duct connects the outlet occurring at the upper end of the vessel to the low pressure or downstream side of the water line. The structure thus arranged and connected will operate to feed the lighter liquid into the line carrying the heavier liquid as the heavier liquid or Water is admitted into the vessel through the inlet and the action or operation will not be varied or disturbed by change in quantity or relative amounts of the two liquids in the vessel.

The apparatus of the invention arranged as first described is combined with or related to a storage reservoir which may carry a supply of heavy fluid or acid and connections are made between the storage reservoir and the filling connections at the vessel so that acid may be intro duced into the vessel to make up for acid fed therefrom.

A general object of this invention is to provide a closed vessel with certain fittings or accessories dividing the vessel into a storage chamber and a transfer chamber, and rendering it useful for feeding a heavy liquid by means of or under'the control of a lighter liquid, or for vide apparatus including a vessel arranged an'dfitted so that a heavy fluid iscontrolled: andafedi by a light fluid, which vessel is coupled witlra' storage reservior carrying a supply of the heavy fluid in such manner as to provide" for replen'= ishing the supply of heavy fluidhin the vessel without interruption of operation or service of the equipment.

The various objects and features of my invention: will. be fully understood fromthe following detailed description of atypical preferred formand application ofthe invention; through-k out which; description reference is made to the accompanyingdrawings, in which:

Fig; 1- is aview-showingthecontrol vessel'providedi by thepresent invention arranged so that a-heavy fluid is control-led or fed by alightfluid; thei vesselxbeing shown combined with the flow line. handling-1 light fluidr and with a storage reservoir carrying-a supply of heavy fluid. Fig. 2 ..is' an enlarged vertical. sectional view of the control? vessel: arranged. as shown in Fig.1.. Fig. 3'- :is a transverse sectional viewtaken as indicated' by line.3-3 on Fig. 2.: similartdFig. 1 showing tthe control vessel ina reversed arrangement or..so' arranged that it operatesto control orfeed' a"- light fluid by means Ofxa; heavy: fluid, the. vessel. being shown connected toaaflow' line handling. a heavyfluid and with astorage reservoir handling or carrying, a'

supply of light fluid, and Fig. 5 is.- a detailed sectional view of the control. vessel asshow-nin does not-mix or; combine therewith; For purpose of}. illustrating typical situations in which the control vessel may be used I- have described it in two different arrangements, the arrangement on-Sheet1 being'such that'a'heavy. fluid, say for instance an acid, is controlled or fed by alight fluid such, for examplaas a gasoline-while the arrangement shown on Sheet 2 is such that a lightfiuid such as oil is controlled or fed by a heavy fluid such as water.

'Iihe control vessel may in practice vary widely in farin -size, proportioning and construction, depending; upon-the liquids to be handledand the serviceto'beperformed. Inza typical-situation-the vessel involves an elongate body Ill whichsisvertically disposed andends H and i2 WhiGh'ClOSB the ends of the body to provides; sealed or completely. closed vessel.

A partition i3 is provided in the VesseLufOr instance in the body portion of the vessel; to

divi'de-the vessel into two separated compartments or chambers one of which will bereferred 13 is"'loc"a't'ed' considerablycloserto endi '1' than Fig. i is a View to end I2 so that the storage chamber A closed by end I2 is considerably larger or is of greater capacity than the transfer chamber 3 which is closed by end H.

Filling connections are provided in communication with the storage chamber A and in accordance with the present invention there are two filling connections, one a side filling connection launder control of a valve [6 and the other an end'fillingconnectio'n' IT' under control of a valve I8. The side filling connection communicates with the chamber A through the body l0 of.the-vessel-andpreferably opens into the chambenA at a point immediately adjacent the partition I3. The end filling connection I1 is shown connectedwith the vessel through the end I! and inthe case illustrated it has a distributor pipe l9 that extends from the end l2 into the chamberA to a point immediately adjacent or close to the partition 13. Through the filling connectionsnjust describeda fluid orfluids may be introduced intothe chamber A- eitherthrough connection I 5 or connection H, or" both," andin any case':the:introduced' fiuid will be discharged" into chamber A at aapoint close to or in the vicin= ityv of the partition [3:-

In the preferredlform of the inventionan auxiliary connection 29 provided-communicating-.withachamber Athroughthe end 12 of the vessel which connection maybe used in bypassing fluid aswill be hereinafter-described: or in draining .the vessel, as circumstances require.

An outlet duct 25 communicates-withthe'trans: fer chamber B preferably: through the end l-Z' of the vessel and isundercontrot of a valve ztr It is through thesoutlet d-uct that -fluid handled or fed by the apparatustis conducted f-rom'the transfer chamber as it is-= displaced therefrom under the action -of the control on feed fluid, as: will be hereinafter described:

An inlet duct 2 communicates-with the transfer chamber B at a pointimmediately adjacent the partition 13'' and in'the case illustratedin the drawings this duct-connects with chamber- B through the body Iflof the vessel; The inlet ductmay be under control of: a suitable valve or regulating device'28-.-

. A bleed duct 364s providedconnecting-renam bers A and Band is preferably located entirely within-the vessel as shown'rin-thedrawings; The bleed duct is pref erably: a--simple,- straight; elon gate. tube extendingthrough partition [3 and" having an inletzend-3 I :open in-the transfer chams berat-apoint removed frompartition l-3- and from the pointthat the inlet duct 2- connects:

into the chamber B-in thedirection-cf: the out-'- let duct- 25. The bleed duc-tpreferably extends a substantial-distanceinto or through-the storage chamber A so thatits other end-32- opens into chamber A. ata pointclose to or in the: vicinity of the end- I'Eclosing chamber A;

A make-up duct to is providedconnecting chambers A-and B and in the preferred form of the invention the make-up duct is carried by partition I 3 to proj ect therefrom into cham-' her 3 toextend" beyond the end-31" of: the-bleed duct-in the direction of the outlet'duct 251 The receiving end 4l of"ductr='4ll is open atipartitior'r 3 to receive flame-mm chamber :A and it has a discharge end 42 openi in? chamberJB' at akpoint considerablycldse'nto the-outlet 'duct 25 than isthe" end-3l of thebleed duct 30.

In practice a liduid level gauge on theexteriorofthe vessel 7 of the heavier"liquidin stbrag chaifibefmaifct a liquid level 46' is provided on the exterior of the vessel to indicate the level of the heavier liquid in the transfer chamber B.

The control vessel embodying the features above described will act when arranged as shown on Sheet 1 of the drawings to effectively handle a heavy liquid such as an acid so that it is fed or controlled by a light liquid such as a gasoline or petroleum derivative. In the particular arrangement of the invention illustrated on Sheet 1 of the drawings, which arrangement is specifically claimed in the present application, a heavy liquid such as acid is fed to a stream of light liquid carried by a flow line 50. The flow line 50 is shown equipped with a suitable pressure regulator or flow controlling device 5| so that the line has an upstream or high pressure portion 52 and a downstream or low pressure portion 53. A branch 52* of the high pressure portion of line 50 is connected with the control vessel through the inlet duct 21 to be under control of valve 28. A continuation 25 of the outlet duct 25 extends to and connects into the low pressure side or section of 1 line 50, this connection being under control of the valve 26.

Assuming the control vessel to be loaded with liquids as illustrated in Fig. 2 of the drawings so that there is a body of heavy liquid or acid in the transfer chamber B filling the chamber from the lower end 3| of the bleed duct while a body of light liquid occurs in the transfer chamber above the lower end 3| of the bleed duct, while at the same time a body of heavy liquid or acid occurs in the storage chamber A above partition l3 and stands to a level such as indicated at X above which point the transfer chamber is filled with light fluid. When the control vessel is thus charged or filled with fluids there will be no flow or discharge of the heavy fluid or acid from the transfer chamber B to the line 50 through the outlet duct 25**, even though valve 26 is open, since fluid cannot flow out of the vessel unless it is displaced by some medium admitted into the vessel. As the valve 28 controlling the inlet duct 21 is open or cracked a suitable amount fluid from the high pressure side or section 52 of the line 50 will flow into the transfer chamber B adjacent partition l3, and being under greater pressure than that occurring in the downstream or low pressure section 53 which is connected to the transfer chamber B, fluid from the inlet connection 21 flows into the vessel and displaces the heavy fluid or acid from the transfer chamber through the connection 25. Light fluid thus introduced into the control vessel enters the lower end of the bleed duct 30 and passes or flows upwardly into the upper end of the storage chamber A, with the result that a uniform body or head of heavy fluid is maintained in chamber B, heavy fluid or acid from the storage chamber A being admitted into chamber B to make up the amount bled or fed therefrom by passage through the make-up duct 48. Through the action just referred to the feed of heavy fluid or acid into the line 58 will be governed by and is directly proportional to the flow of fluid in the line 50 and with a given differential between the sections 5'2 and 53 of line 50 and with a given setting of valve 28, a predetermined feed will be gained.

In a typical preferred installation involving the present invention a storage reservoir S is provided to carry a body of heavy liquid such as a quantity of the acid to .be fed as hereinabove described. A supply line 6|! extends from the bottom or lower end portion of the reservoir S to the filling connection l5 and a supply line 6| extends from the bottom or lower end portion of the reservoir to the filling connection Assuming the heavy fluid in the reservoir to be under pressure or under severe head the acid can be transferred from the reservoir into the control vessel by opening either or both of the valves controlling the filling connections. In the particular case illustrated the reservoir S is shown as 'a closed vessel and a bypass 62 is provided from the auxiliary duct 20 to the top of reservoir S and is under control of a valve 63. With this arrangement, as heavy fluid is admitted or introduced into the control vessel light fluid may be allowed to exhaust or escape from the upper end portion of the storage chamber A to fill into the top of the reservoir and take the place of the heavy fluid drained therefrom.

The arrangement of the control vessel shown on Sheet 2 of the drawings is provided where a light fluid such as an oil is to be fed or controlled by a heavy fluid such as water, or the like. This arrangement of parts is set forth in my copending application entitled Liquid Feeding Apparatus filed August 1, 1949, Serial No. 107,842. In this case the control may be related to a flow line 50 including a flow control device or fitting 5P so that the upstream side or section 52 of the line is under higher pressure than the downstream side'or section 53*. A branch 52 from line section 52 extends to the inlet duct 21 and flow therethrough is under control of valve 28. The outlet duct or an extension 25 extends from the outlet 25 to the downstream section 53 of the flow line.

With the control connected with a flow line as just described and assuming it to be full of or charged with fluid, as illustrated in the drawings, light fluid from the transfer chamber B and standing in the chamber above the end 3| of the bleed duct will flow out through the discharge duct 25 only when fluid is introduced from the high pressure side of the flow line through the inlet 21. The fluid thus introduced to displace the oil out through the outlet duct 25 being heavy, overflow into the bleed duct to gravitate into the transfer chambers A where it accumulates and displaces the lighter fluid accumulated in the upper portion of chamber A so it flows up through the makeup duct 40 and into chamber B to take the place of or make up for the light fluid fed out of chamber B.

' In a preferred application or arrangement a storage reservoir S is provided to carry a supply of light fluid so that the control vessel can be replenished from time to time. The reservoir S is shown with a supply line 6|! from the reservoir S to the filling connection IS in the side of the body ID. In the particular case illustrated it is contemplated that there be a body of heavy liquid in the reservoir S beneath the body of light liquid, in which case the light liquid feeds out of the top of the reservoir and the supply connection Ell is therefore connected with the top of the reservoir. In the preferred arrangement a connection 62? extends from the auxiliary duct or connection in communication with the storage reservoir A and extends to the bottom of reservoir S so that when the valve 63 controlling duct is opened it admits heavy fluid from the lower end of the storage chamber A to the bottom of the resi e'rvoirS-to' enter reservoir S and displace light.

Ihe apparatus which is the subject of this application is employed in the invention which is set forth in my .copending application, Serial No. 107,842, filed August 1, 1949, entitled "Liquid Feeding Apparatus.

Having described only a typical preferred form and application of my invention, I do not wish to be limited or restricted to the specific details herein set forth, but wish to reserve to myself any variations or modifications that may appear to those skilled in the art and fall within the scope of the following claims.

Having described my invention, I claim:

1. A control feeding a liquid by another liquid of difierent specific gravity including, a closed vessel having imperforate ends and provided with separated chambers one above the other, one a transfer chamber carrying bodies of said liquids and the other a storage chamber carrying bodies of said liquids, an outlet from the transfer chamber to pass the fed liquid therefrom, an inlet to the transfer chamber admitting said other liquid thereto, a bleed duct conducting said other liquid' from the transfer chamber to the storage chamber, and a make-up duct conducting liquid from the storage chamber to the transfer chamber to be fed therefrom.

2. A control feeding'a liquid by another liquid of different specific gravity including, a closed vessel having imperfor-ate ends, a partition in the vessel dividing it into chambers one above the other, one a transfer chamber carrying bodies of said liquids throughout its width and the other a storage chamber carrying bodies of said liquids throughout its width, an outlet from the transfer chamber to pass the fed liquid therefrom, an inlet to the transfer chamber admitting said other liquid thereto, a bleed duct conducting said other liquid from the transfer chamber to the storage chamber, and a make-up duct conducting liquid from the storage chamber to thetransfer chamber to be fed therefrom.

,3. A control feeding a liquid by another liquid of different specific gravity including, a closed vessel having imperforate ends, a partition in the vessel dividing it into chambers one above the other, one a transfer chamber carrying bodies of said liquids throughout its width and the other a storage chamber carrying bodies of said liquids throughout its width, an outlet from the transfer chamber to pass the fed liquid therefrom, an inlet to the transfer chamber admitting said other liquid thereto, a bleed duct conducting said other liquid from the transfer chamber to the storage chamber, the lower end of said ductbeing disposed at a lower level than said inlet, and a make-up duct extending from the-partition into the transfer chamber and conducting liquid from the storage chamber to the transfer chamber to be fed therefrom.

4. A control feeding a liquid by another liquid of different specific gravity including, a, closed vessel having imperforate ends, a partition in the vessel dividing it into chambers one above the other, one a transfer chamber carrying bodies of said liquids throughout its width and the other a storage chamber carrying bodies of said liquids throughout its width, an outlet from the'transfer chamber to pass the fed liquid therefrom, an.

inlet to the transfer chamber admitting said other liquid thereto, a bleed duct extending into'the transfer chamber from the partition and conducting said other liquid from the transfer'cham, her. to the storage 'chaxnben-andaimake-up duct 8: extending into the transfer chamber from the partition-and to a point the transfer chamber beyond that at which the bleed duct terminates and beyond said inletsaid ,n'ialre-up duct conductingl quid i on the storage cha ber to the transfer chamber to be fed therefrom.

5. A control feeding a liquid by another liquid of different specific gravity including, an elongate yertically disposed closed vessel having ime perforate ends, a partition inthe vessel dividing it into chambfirs one above the other, one a transfer chamber carrying bodies of said liquids throughout its width and the other a storage chamber carrying bodies of said liquids throughout its width, an outlet from the transfer chamber to pass the fed liquid therefrom, an inlet to thetransfer chamber admitting said other liquid thereto, a bleed duct conducting-said other liquid from a level in the transfer chamber below said inlet to the storage chamber, and a make-up duct conducting liquid from the storage chamber to a level in thetransfer chamber below said inlet to be fed therefrom.

6. A control feeding a-liquid by anotherliquid of different specific gravity including, an elongate vertically disposed closed vessel having imperforate ends, a partition in the vessel dividing it into chambers one'above the other, one a transfer chamber carrying bodies of said liquids throughout its width and the other a storage chamber carrying bodies of said liquids throughout its width, the storagechamber being of substantially greater capacity than the transfer chamber, an outlet from the transfer chamber to pass the fed liquid therefrom, an inlet to the transfer chamber admitting said other liquid thereto, a bleed duct conducting said other liquid from the transfer chamber to the storage .chamber, and a make-up duct conducting liquid from the storage chamber to the transfer chamber to be fedtherefrom.

7. A control feeding a liquid by anotiier'liquid of different specific gravity including, a closed vessel having imperforate ends, a partition in the vessel dividing it into chambers one above the other, one a transfer chamber carrying bodies of said liquid throughout its width and the other a storage chamber carrying bodies of said liquids throughout its width, said storage chamber being of larger capacity than said transfer chamber, an-outlet from the transfer chamber to pass the fed liquid therefrom, an inlet to the transfer chamber admitting said-other liquid thereto, a bleed duct extending into the transfer chamber from the partition and into the storage chamber from the partition and conducting said other liquid from the transfer chamber to the storage chamber, and a make-up duct extending into the transfer chamber from the partition and to a point in the transfer chamber beyond that at which the bleed duct terminates and beyond said inlet conducting liquid from the storage chamber to the transfer chamber to befed therefrom.

8. A control feeding aheavy liquid by a light liquid mcludin a closed Vessel having imperforate ends and provided with a partition dividing it into upper and lower chambers each carrying bodies of said liquids throughout their widths, an outlet duct passing heavy liquid from the bottom of the lower chamber, an inlet passing light liquidinto thetop of the lower chamber, a bleed duct extending from a point within the lower chamber below the partition and below said inlet to the upper chamber, and a make-up duct extending from the upper chamber to aipointinz the lower chamber belowthe first mentioned point.

9. A control feeding a heavy liquid by a light liquid including, a closed'vessel having imperforate ends and provided with a partition dividing it into upper and lower chambers each carrying bodies of said liquids throughout their widths, an outlet duct passing heavy liquid from the bottom of the lower chamber, an inlet passing light liquid into the top of the lower chamber, a bleed duct extending from a point within the lower chamber below the partition and below said inlet to a point within the upper chamber above the partition, and a make-up duct extending from the upper chamber to a point in the lower chamber below the first mentioned point.

10. A control feeding a liquid by another liquid of different specific gravity including, a closed vessel having imperforate ends, a partition in the vessel dividing it into chambers one above the other, one a transfer chamber carrying bodies of said liquids throughout its width and the other a storage chamber carrying bodies of said liquids throughout its width, an outlet from the transfer chamber to pass the fed liquid therefrom, an inlet to the transfer chamber admitting said other liquid thereto adjacent the partition, a bleed duct conducting said other liquid from the transfer chamber to the storage chamber, and a make-up duct conducting liquid from the storage chamber to the transfer chamber below said inlet to be fed from the transfer chamber.

11. A control feeding liquid to a flow line carrying liquid of a different specific gravity by liquid from the line including, a closed vessel having a partition dividing it into a transfer chamber and a storage chamber each carrying bodies of said liquids, an outlet duct passing liquid to be fed from the transfer chamber to a downstream section of the flow line, an inlet from an upstream section of the flow line to the transfer chamber, a bleed duct conducting liquid admitted to the transfer chamber from the line to the storage chamber and a make-up duct conducting liquid to be fed from the storage chamber to the transfer chamber.

12. A control feeding a heavy liquid to a flow line carrying a light liquid by means of liquid from the line including, a closed vessel having a partition dividing it into. upper and lower chambers carrying bodies of said liquids, an outlet duct from the bottom of the lower chamber to a downstream section of the fiow line to conduct heavy liquid from the lower chamber to the line, an inlet duct passing liquid from an upstream section of the line to the lower chamber to displace heavy liquid therefrom, a bleed duct passing light liquid from the lower chamber to the upper chamber, and a make-up duct passing heavy liquid from the upper chamber to the lower chamber.

13. A control feeding a light liquid to a flow line carrying a heavy liquid by means of liquid from the line including, a closed vessel having a partition dividing it into upper and lower chambers carrying bodies of said liquids, an outlet duct carrying light liquid from the top of the upper partition dividing it into upper and lower chambers carrying bodies of said liquids, an outlet duct from the bottom of the lower chamber to a downstream section of the flow line to conduct heavy liquid from the lower chamber to the line, an inlet duct passing liquid from an upstream section of the line to the lower chamber to displace heavy liquid therefrom, a bleed duct passing light liquid from the lower chamber to the upper chamber, a make-up duct passing heavy liquid from the upper chamber to the lower chamber, a storage reservoir, and a supply connection from the reservoir to the upper chamber.

15. A control feeding a heavy liquid to a flow line carrying a light liquid by means of liquid from the line including, a closed vessel having a partition dividing it into upper and lower chambers carrying bodies of said liquids, an outlet duct from the bottom of the lower chamber to a downstreamsection of the flow line to conduct heavy liquid from the lower chamber-to the line, an inlet duct passingliquid from an upstream section of the line to the lower chamber to displace heavy liquid therefrom, a bleed duct passing light liquid from the lower chamber to the upper chamber, a make-up duct passing heavy liquid from the upper chamber to the lower chamber, a storage reservoir, and a valve controlled connection from the reservoir tothe lower end portion of the upper chamber..

16. A control feeding a liquid by another liquid of different specific gravity including, a closed vessel having imperforate ends and provided with separated chambers one above the other, one a transfer chamber carrying bodies of said liquids throughout its width and the other a storage chamber carrying bodiesof .said liquids throughout its width, an outlet from the transfer chamber to pass the fed liquid therefrom, an inlet to the transfer chamber admitting said other liquid thereto, a bleed duct conducting said other liquid from the transfer chamber, to the storage chamber, a filling connection into the storage chamber, and a make-up duct conducting liquid from the storage chamber to the transfer chamber to be fed therefrom, said make-up duct ex- I tending to a point below said inlet.

mitted to the transfer chamber from the line to the storage. chamber and a make-up duct conducting liquid to be fed from the storage chamber to the transfer chamber. I 1,8. In combination, a flow line carrying a liquid having upstream and downstream sections separated by a flow regulator, a closed vessel carrying a liquid to be fed to the lineand having apartition dividing it into a transfer chamber and a storage chamber each carrying bodies of said liquids, an outlet duct-passing liquid to be fed from the transfer chamber to the downstream section of the fiow line, an inlet'f-rom the upstream section of the flow line to the transfer chamber, a bleed duct conducting-liquid admitted to the transfer chamber from the line to the storage chamber, a make-up duct 'c'on-' I1 ducting liquid tobe fed from the storage-"chemher-to" the transfer'chamber, e: storage reservoir, and a supply connection from the" reservoir to the storage chamber;

19. A control feeding a liquidbyanother'liquidof different specific gravity including, a closed vessel having imperforate ends and provided with separated chambers one abovethe other, onea transfer chamber'carrying bodies of said" liquids and the other a storage chamber carrying bodies of'said liquids, an outlet from the transfer chamher to pass the fed liquid therefrom, an inlet to the transfer chamber admitting said'other liquid thereto, a bleed duct conducting said other liquid f rointhe transfer chamber to the storage chamb'er,.and a make-up duct, said transfer chamber being located abovesaid storage chamber, said outlet duct passing light iiquidrrom the top of the transfer chamber, said inlet duct admitting heavy liquid into the bottom of the transfer chamber, said bleed duct conveying heavy liquid overflowing thereinto within the transfer chairiber to the storage chamber so as to displace light liquid from the latter, and said mate-i113 duct passing displaced light liquid from the storage chamber to the transfer chaiiiher at a point above that at which the heavy liquid overflows into the bleed duct. l

20. In coiiihination, a new line adapted to handle liquids" under pressure with a high pressure section anda ow pressure section,- a liquid feed adapted to feed liquid of lower specific gravity than the liquid carried by the flow line into said low pressure section of the flow line ineluding, an elongate closedvesselicarrying a supply of the lighter liquid, a partition in said vessel dividing the seine into a feed chamber and a storage chamber, one aheve the other, an inlet to the lower portion of the feed chamber adapted to admit the heav liquid, an outlet from the upper end of the feed chamber adapted to pass the light liquid displaced by the heavy liquid; a bleed duet disposed within the vessel'and extending from the lower portion of the feed chamber to the lower portion of the storage chamber,.and a make-up duet disposed within the vessel and extending from the upper end of the storage chamber to the upper end of the feed chamber,

liquid supply means including a valve controlled supply line supplying light liquid to the storage chamber of the liquid feed, apressure line from the high pressure section ofv the flow lineto the inlet, anda delivery line from the outlet to the lowpressu're' section of the flow line.

21. In combination, a flow l'iiie adapted to handle liquid under pressure with a high pressure. section and a low pressure section,. a liquid feed adapted to iiitr'oduce liquid of lower specific gravity iiito the low pressure section of the fiow line including, an elongate verticallydisposed closed vessel carrying-said lighter liquid, a partition in said vessel dividing the same into a feed chamber and a storage chamber, one above the" other, an inlet to the lower end or the feed delivering saidliquid from: the reservoir to" the liquid feed, a pressure line from the high pres- 12 sure se tion' of flow line try the inlet; arid'a delivery line from the outlet to the low pressure section of thefiow'line.

2'2; combination, a fio'w line adapted' to pass liquid under" pressure with" a high pressure section and a low pressuresection, a liquid feed adapted to feed liquid of lower specific gravity than the liquid in'tlie flow line into the lower pressure section of the flow line to blend with said'liqtiid in the flow line including, a closed vessel filled with the lighter liquid, a partition in said vessel dividing thesame intoa feed chamher and a storagerchamber, one above the other, an iiiletv to the lower portion of the feed chamher, an outlet from vtl'ieupper portion of the feed chamber, a'hleed duet dis'pc'isdwithinthe vessel and extending fronithe lower portion of the feed chamber to the lower portior'i of the storage chamber, and a make-up. duct disposed within the vessel and eiiteridiiigfrom the upper portion or'thstorag chamber to the upper portion of the feed chamber, liquid supply meansincludmg a, reservoir denyin the-lighter liquid to be fed into the liquid in the flow line, a transfer connection between the bottom of the reservoir and the lower portion of thestorage chamber and a supply line delivering liquid from the reservoir to the liquid feed, a pressure line from the high. pressure section of the flow line. to the inlet, and a delivery line from: the outlet to the low pressure section of the flow line.

23. Apparatus for use with a flow line adapted to pass'l-iquid under pressure having a high pres sure. section and a; low pressuresect-ion including' a liquid feed adapted to feed liquid of lower specific gravity than the liquid in the flow line into the low pressure section of the flow line to blend said liquids including; an elongate vertically disposed closed vessel filled-with the lighter liquid; a partitionin said vessel dividing the same intoa feed chamber'and a storage chamber, one above the ot-her, an inlet to thelower portionof thefeedchamber; anoutlet from the upper portion of the feed chamber,- a bleed duct disposed within the vessel and extending. from the lower portion of the feed chamber to the lower portion of the'storage chamher, arida make-up duct disposed the vessel arid extending from thei'upperportion" erthe storage chamber to the upper portion of the feed chamber, liquid supply means including areservoir carrying the lighter liquid to be fed and a supply line delivering said lighter liquid from the reservoir to the liquid feed, aprssure line connected to the inlet and adapted to connect with the high pressure section of the new hire to introduce liquid from the supply-11m into the liquid feed, and a delivery line eoiiriecte'cl to the outlet and adapted to coniiect to the row pressure section of the how line to feed said lighter liquid displaced from the feed into the lower pressure section of the fiowlirie. V v W mivnj B. BELL. I

here-tenets cits-ain the file of this patent 

